A jacketed heat exchange pressure-bearing type unpowered hot water system
Patent Information
- Application Number
- CN202521843168.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-28
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-08-28
AI Technical Summary
[0002]目前市面已经有无动力热水器，大多采用的换热方式是直管式换热与盘管式换热；但是目前的换热效率较差，且无承压储热水箱，在结构设计中，真空管短，集热面积小，吸收的太阳能少，导致管内被加热的工质（如导热液）温度提升有限，与使用端待加热液体（如冷水）的温差小
本实用新型提供的一种夹套换热承压式无动力热水系统，将单台承压夹套换热式太阳能热水器串联在一起，分别在自来水进水口管路和热水出水口管路加装安全阀；系统使用的安全性得到保障；在热水出水口管路中的安全阀后，再连接辅助水箱，辅助水箱具有储热功能、辅助加热水。
Smart Images
Figure CN224730825U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of solar energy utilization technology, specifically to a jacketed heat exchange pressurized non-powered hot water system. Background Technology
[0002] Currently, there are non-powered water heaters on the market, most of which use straight-tube or coil-type heat exchange methods. However, the current heat exchange efficiency is relatively poor, and there is no pressurized hot water storage tank. In the structural design, the vacuum tubes are short, the heat collection area is small, and the absorbed solar energy is limited, resulting in a limited temperature rise of the working fluid (such as heat transfer fluid) inside the tube and a small temperature difference between it and the liquid to be heated at the user end (such as cold water). Non-powered systems rely on the "density difference between hot and cold fluids" to drive circulation (hot fluid with lower density rises, cold fluid with higher density sinks). A small temperature difference results in weak circulation power, slow or even stagnant flow of the working fluid, and heat cannot be effectively transferred to the heat exchange end. Alternatively, the temperature of the working fluid inside the tube is low, naturally weakening the circulation power, slowing the fluid flow speed, and reducing the utilization rate of the heat exchange area, ultimately making it difficult to exchange heat. In addition, the size of the project also needs to be considered. If the project is small, the number of water heaters connected in series is relatively small, and the heat exchange efficiency is even lower: the overall heat output of the system is low when the number of units connected in series is small, the average temperature increase of the working fluid is limited, and the temperature difference with the user end is small; moreover, when there are few units connected in series, the total amount of working fluid in the system is small, the circulation flow is insufficient, and the heat is difficult to accumulate and transfer to the user end, resulting in low heat exchange efficiency. Summary of the Invention
[0003] This invention provides a jacketed heat exchange pressurized non-powered hot water system to improve heat exchange efficiency.
[0004] A jacketed heat exchange pressurized non-powered hot water system is characterized by comprising multiple pressurized jacketed heat exchange solar water heaters connected in series and an auxiliary water tank. The pressurized jacketed heat exchange solar water heater is equipped with a pressurized water tank, with a jacket layer outside the inner tank, and the outermost layer of the pressurized water tank is an insulation layer; an inlet and an outlet are respectively provided on both sides of the pressurized water tank, and elbows are connected to the inlet and outlet inside the pressurized water tank, with the inlet elbow facing downward and the outlet elbow facing upward; an exhaust pipe is also connected inside the inner tank, and a safety valve is connected to the exhaust pipe on the outside of the water tank; An exhaust port is connected to the outside of the water tank in the jacket layer; the jacket layer is also connected to the solar collector; and a liquid injection valve is installed on the pipeline connected to the solar collector. When pressurized jacketed heat exchange solar water heaters are connected in series, the inlet of the end pressurized jacketed heat exchange solar water heater is connected to the tap water pipe, and an inlet safety valve is also installed in the tap water pipe; the outlet is connected to the inlet of the next pressurized jacketed heat exchange solar water heater; the outlet of the other end pressurized jacketed heat exchange solar water heater is connected to the auxiliary water tank, and an outlet safety valve is connected to the pipeline. The auxiliary water tank is connected to the water-using end.
[0005] Furthermore, the pressurized water tank is an enamel-lined pressurized water tank.
[0006] Furthermore, the inlet safety valve is located on the outside of the inlet; the outlet safety valve is connected to the outside of the outlet.
[0007] Furthermore, the auxiliary water tank is one of a heat pump water heater, a gas water heater, and a buffer water tank with electric heating function.
[0008] The beneficial effects of this utility model are: This utility model provides a jacketed heat exchange pressurized non-powered hot water system, which connects a single pressurized jacketed heat exchange solar water heater in series, and installs safety valves on the tap water inlet pipe and the hot water outlet pipe respectively; the safety of the system is guaranteed; after the safety valve in the hot water outlet pipe, an auxiliary water tank is connected, which has a heat storage function and assists in heating water.
[0009] This invention also utilizes a pressurized enamel-lined hot water tank, resulting in higher heat exchange efficiency, with all heat stored within the insulated tank. Compared to ordinary solar water heaters, which are not fully enclosed: traditional solar water heaters typically have open vents (or overflow structures directly connected to the atmosphere) in their storage tanks, and their circulation pipes are mostly non-pressurized open designs—meaning the water inside the tank and pipes is open to the atmosphere, without forming a closed pressure system, leading to faster cooling. In contrast, this invention uses multiple pressurized jacketed solar water heaters connected in series, with cold water entering and hot water exiting simultaneously. Cold water enters from the bottom, and hot water exits from the top, minimizing water mixing and thus achieving higher heat exchange efficiency. Attached Figure Description
[0010] Figure 1 Schematic diagram of a pressure-jacketed heat exchange solar water heater; Figure 2 This is a schematic diagram of the structure of Example 1; Figure 2a for Figure 2 Enlarged view of circle A in the middle; Figure 2b for Figure 2 Enlarged view within circle B; Figure 3This is a schematic diagram of the structure of Example 2; Figure 4 This is a schematic diagram of the structure of Example 3; In the diagram: 1. Pressurized water tank; 2. Inner tank; 3. Jacket layer; 4. Insulation layer; 5. Inlet; 6. Outlet; 7. Elbow; 8. Vent pipe; 9. Safety valve; 10. Vent outlet; 11. Solar collector; 12. Liquid injection valve; 13. Tap water pipe; 14. Inlet safety valve; 15. Outlet safety valve; 16. Heat pump water heater; 17. Gas water heater; 18. Buffer water tank with electric heating function; 19. Outdoor unit. Detailed Implementation
[0011] The technical solution of the present invention will be further explained and illustrated below through specific embodiments. Example 1
[0012] See appendix Figure 1 , Figure 2 A jacketed heat exchange pressurized non-powered hot water system, characterized in that it includes multiple pressurized jacketed heat exchange solar water heaters and heat pump water heaters connected in series 16. The pressure-bearing jacketed heat exchange solar water heater is equipped with a pressure-bearing water tank 1, which is an enamel-lined pressure-bearing water tank 1; a jacket layer 3 is provided outside the inner tank 2, and the outermost layer of the pressure-bearing water tank 1 is an insulation layer 4; an inlet 5 and an outlet 6 are respectively provided on both sides of the pressure-bearing water tank 1, and elbows 7 are respectively connected to the inlet 5 and the outlet 6 inside the pressure-bearing water tank 1, with the elbows 7 of the inlet 5 facing downwards and the elbows 7 of the outlet 6 facing upwards; an exhaust pipe 8 is also connected inside the inner tank 2, and a safety valve 9 is connected to the exhaust pipe 8 on the outside of the water tank; An exhaust port 10 is connected to the outside of the water tank in the jacket layer 3 to exhaust air during liquid injection; the jacket layer 3 is also connected to the collector 11; and an injection valve 12 is provided on the pipeline connected to the collector 11. When pressurized jacketed solar water heaters are connected in series, the inlet 5 of the end pressurized jacketed solar water heater is connected to the tap water pipe 13, and an inlet safety valve 14 is also installed in the tap water pipe 13; the inlet safety valve 14 is located outside the inlet 5; the outlet 6 is connected to the inlet 5 of the next pressurized jacketed solar water heater; the outlet 6 of the other end pressurized jacketed solar water heater is connected to the heat pump water heater 16, and an outlet safety valve 15 is connected to the pipeline, the outlet safety valve 15 is connected outside the outlet 6; the water tank of the heat pump water heater 16 is connected to the water user. The water tank of the heat pump water heater 16 is connected to the outdoor unit 19. Example 2
[0013] See appendix Figure 1 , Figure 3A jacketed heat exchange pressurized non-powered hot water system, characterized in that it includes multiple pressurized jacketed heat exchange solar water heaters and gas water heaters connected in series 17. The pressure-bearing jacketed heat exchange solar water heater is equipped with a pressure tank 1, which is an enamel-lined inner tank 2. A jacket layer 3 is provided outside the inner tank 2, and the outermost layer of the pressure tank 1 is an insulation layer 4. An inlet 5 and an outlet 6 are respectively provided on both sides of the pressure tank 1. Inside the pressure tank 1, elbows 7 are connected to the inlet 5 and the outlet 6 respectively, with the elbows 7 of the inlet 5 facing downwards and the elbows 7 of the outlet 6 facing upwards. An exhaust pipe 8 is also connected inside the inner tank 2, and a safety valve 9 is connected to the outside of the tank. An exhaust port 10 is connected to the outside of the water tank in the jacket layer 3 to exhaust air during liquid injection; the jacket layer 3 is also connected to the collector 11; and an injection valve 12 is provided on the pipeline connected to the collector 11. When pressurized jacketed heat exchange solar water heaters are connected in series, the inlet 5 of the end pressurized jacketed heat exchange solar water heater is connected to the tap water pipe 13, and an inlet safety valve 14 is also installed in the tap water pipe 13; the inlet safety valve 14 is located outside the inlet 5; the outlet 6 is connected to the inlet 5 of the next pressurized jacketed heat exchange solar water heater; the outlet 6 of the other end pressurized jacketed heat exchange solar water heater is connected to the gas water heater 17, and an outlet safety valve 15 is connected on the pipeline, the outlet safety valve 15 is connected outside the outlet 6; the gas water heater 17 is connected to the water-using end. Example 3
[0014] See appendix Figure 1 , Figure 4 A jacketed heat exchange pressurized non-powered hot water system, characterized in that it includes multiple pressurized jacketed heat exchange solar water heaters connected in series and a buffer water tank 18 with electric heating function. The pressure-bearing jacketed heat exchange solar water heater is equipped with a pressure tank 1, which is an enamel-lined inner tank 2. A jacket layer 3 is provided outside the inner tank 2, and the outermost layer of the pressure tank 1 is an insulation layer 4. An inlet 5 and an outlet 6 are respectively provided on both sides of the pressure tank 1. Inside the pressure tank 1, elbows 7 are connected to the inlet 5 and the outlet 6 respectively, with the elbows 7 of the inlet 5 facing downwards and the elbows 7 of the outlet 6 facing upwards. An exhaust pipe 8 is also connected inside the inner tank 2, and a safety valve 9 is connected to the outside of the tank. An exhaust port 10 is connected to the outside of the water tank in the jacket layer 3 to exhaust air during liquid injection; the jacket layer 3 is also connected to the collector 11; and an injection valve 12 is provided on the pipeline connected to the collector 11. When pressurized jacketed heat exchange solar water heaters are connected in series, the inlet 5 of the end pressurized jacketed heat exchange solar water heater is connected to the tap water pipe 13, and an inlet safety valve 14 is also installed in the tap water pipe 13; the inlet safety valve 14 is located outside the inlet 5; the outlet 6 is connected to the inlet 5 of the next pressurized jacketed heat exchange solar water heater; the outlet 6 of the other end pressurized jacketed heat exchange solar water heater is connected to the buffer water tank 18 with electric heating function, and an outlet safety valve 15 is connected on the pipeline, the outlet safety valve 15 is connected outside the outlet 6; the buffer water tank 18 with electric heating function is connected to the water-using end.
[0015] In use, the solar collector 11 absorbs solar energy and collects heat, then exchanges heat with the heat-conducting liquid in the pressurized water tank 1 through a jacket, raising the water temperature. When the user turns on the water supply, tap water enters the system under its own pressure, pushing the heated water in the pressurized water tank along the pipeline to the auxiliary water tank. The auxiliary water tank receives and stores the hot water, while maintaining its temperature through its own insulation structure for daily use. In case of cloudy days, nights, or other conditions without sunlight, the hot water stored in the auxiliary water tank is used first. When the temperature of the hot water in the auxiliary water tank is lower than the set value (or the water volume is insufficient), the heating function of the auxiliary water tank (such as electric heating, heat pump, etc.) can be manually or automatically activated through a temperature control device to heat the water to the set temperature, ensuring water demand.
Claims
1. A jacketed heat exchange pressurized non-powered hot water system, characterized in that, It includes multiple pressure-jacketed heat exchange solar water heaters connected in series and an auxiliary water tank; The pressurized jacketed heat exchange solar water heater is equipped with a pressurized water tank, with a jacket layer outside the inner tank, and the outermost layer of the pressurized water tank is an insulation layer; an inlet and an outlet are respectively provided on both sides of the pressurized water tank, and elbows are connected to the inlet and outlet inside the pressurized water tank, with the inlet elbow facing downward and the outlet elbow facing upward; an exhaust pipe is also connected inside the inner tank, and a safety valve is connected to the exhaust pipe on the outside of the water tank; An exhaust port is connected to the outside of the water tank in the jacket layer; the jacket layer is also connected to the solar collector; and a liquid injection valve is installed on the pipeline connected to the solar collector. When pressurized jacketed heat exchange solar water heaters are connected in series, the inlet of the end pressurized jacketed heat exchange solar water heater is connected to the tap water pipe, and an inlet safety valve is also installed in the tap water pipe; the outlet is connected to the inlet of the next pressurized jacketed heat exchange solar water heater; the outlet of the other end pressurized jacketed heat exchange solar water heater is connected to the auxiliary water tank, and an outlet safety valve is connected to the pipeline. The auxiliary water tank is connected to the water-using end.
2. The jacketed heat exchange pressurized non-powered hot water system according to claim 1, characterized in that, The pressurized water tank is an enamel-lined pressurized water tank.
3. The jacketed heat exchange pressurized non-powered hot water system according to claim 1, characterized in that, The inlet safety valve is located on the outside of the inlet; the outlet safety valve is connected to the outside of the outlet.
4. The jacketed heat exchange pressurized non-powered hot water system according to claim 1, characterized in that, The auxiliary water tank is one of the following: heat pump water heater, gas water heater, and buffer water tank with electric heating function.